Additively manufacturing fluorine-containing polymers

ABSTRACT

A system and method of additively manufacturing a part including electrically conductive or static dissipating fluorine-containing polymers. The method includes depositing fluorine-containing polymer additive manufacturing material onto a build platform, selectively cross-linking portions of the deposited additive manufacturing material, and curing the selectively cross-linked portions such that the part is at least one of electrically conductive and static dissipating.

STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH OR DEVELOPMENT

This invention was made with Government support under Contract No.:DE-NA-0002839 awarded by the United States Department of Energy/NationalNuclear Security Administration. The Government has certain rights inthe invention.

BACKGROUND

Electrically conductive or static dissipating fluorine-containingpolymer part manufacturing is currently limited by several factors. Forexample, internal stress in fluorine-containing polymers results inwarping, particularly in larger fixtures. Conventional manufacturingwith fluorine-containing polymers also produces volatile organiccompounds (VOCs). Furthermore, general limitations of conventionalmanufacturing techniques such as material removal tooling restrictionsprevent fluorine-containing polymers from being used in complexelectronic circuits and other parts.

SUMMARY OF THE INVENTION

Embodiments of the present invention solve the above-mentioned problemsand other problems and provide a distinct advance in the art ofmanufacturing electrically conductive or static dissipative parts. Moreparticularly, the present invention provides a system and method foradditively manufacturing parts including electrically conductive orstatic dissipating fluorine-containing polymers.

One embodiment of the invention is an additive manufacturing systemcomprising a build platform, a material deposition device, an energysource, and a cure device. The additive manufacturing system utilizes anadditive manufacturing material including electrically conductive orstatic dissipating fluorine-containing polymers to form an electricallyconductive or static dissipating part. The additive manufacturing systemmay employ any additive manufacturing or “3D printing” methods such as asintering, laser melting, laser sintering, DIW, extrusion, fusedfilament, stereolithography, light polymerizing, powder bed, wireadditive, or laminated object manufacturing. The additive manufacturingsystem may also be a hybrid system that combines additive manufacturingwith molding, scaffolding, and/or other subtractive manufacturing orassembly techniques.

The additive manufacturing material may be in pellet or powder form orany other suitable form. The additive manufacturing material may alsoinclude a supplemental material such as graphite, graphene, or carbon.

The build platform may be a stationary or movable flat tray or bed, asubstrate, a print plate, a shaped mandrel, a wheel, scaffolding, orsimilar support. The build platform may be integral with the additivemanufacturing system or may be removable and transferable with the partas the part is being constructed.

The material deposition device may include a nozzle, guide, sprayer, orother similar component. The material deposition device may beconfigured to deposit material via direct ink writing (DIW) at roomtemperature for subsequent curing. In one embodiment, the materialmixture deposition device is configured to extrude strands of additivemanufacturing material mixture for creating a lattice structure.

The energy source may be a laser, heater, or similar component formelting the additive manufacturing material and bonding (e.g.,sintering) the additive manufacturing material to a previouslyconstructed layer. The energy source may be configured to melt theadditive manufacturing material as the additive manufacturing materialis being deposited or melt the additive manufacturing material of anentire layer after the layer of additive manufacturing material has beendeposited.

The cure device is a heating device or system for curing the part aftermaterial deposition is complete. To that end, the cure device may be anoven, a furnace, a heating element, or any other suitable heatingdevice.

In use, the build platform supports the part as it is being constructed.The material deposition device deposits the additive manufacturingmaterial onto the build platform and onto previously constructed layers.The energy source bonds the additive manufacturing material together.The cure device cures the additive manufacturing material so as tocreate an electrically conductive or static dissipating part.

Another embodiment of the invention is a method of additivemanufacturing a part using electrically conductive or static dissipatingfluorine-containing polymers.

The additive manufacturing material is then fed to a material depositiondevice. The additive manufacturing material mixture may be metered indiscrete amounts or continuously, depending on movement and position ofthe material deposition device.

A material deposition device then deposits the additive manufacturingmaterial onto a build platform and previously constructed layers. Thespecific location and placement of the additive manufacturing materialmay be according to computer-aided design (CAD) data, or other technicalmodel or drawing, as followed manually or by a user or as directed in anautomated or semi-automated fashion via control signals provided from aprocessor. For example, the material deposition device may deposit theadditive manufacturing material mixture according to an electroniccircuit pattern.

The additive manufacturing material is then cured in a cure device orsintered via an energy source. For example, the cure device may heat thepart so as to cross-link at least some of the deposited additivemanufacturing material. This may be done selectively so that certainportions of the deposited additive manufacturing material arecross-linked. Alternatively, the energy source may melt or sinter, andthereby cross-link, selected portions of the additive manufacturingmaterial of the current layer. This may include tracing the energysource over or through the current layer according to CAD data, models,drawings, or other technical resources. A drying system may then be usedto dry (or post cure) the part.

Any of the above steps may be repeated multiple times as needed. Forexample, once one layer of the part has been deposited, another layer ofadditive manufacturing material may be deposited on the previouslydeposited layer.

The above-described steps may be performed in any order, includingsimultaneously. In addition, some of the steps may be repeated,duplicated, and/or omitted without departing from the scope of thepresent invention.

The above-described additive manufacturing system and method provideseveral advantages. For example, the resulting part is at least one ofelectrically conductive and static dissipating, while benefiting fromthe broad possibilities of additive manufacturing and design. Afunctional material may be selectively added to the additivemanufacturing material, thus training the electrically conductive orstatic dissipating characteristic in regions, portions, or areas of thepart for creating electronic circuits and other electrical orstatic-sensitive components. For other applications, the electricallyconductive or static dissipating characteristic can be truly homogenousthroughout the additive manufacturing material (and hence the part),whereas conventional manufacturing techniques only provide approximatehomogeneity.

Additive manufacturing reduces internal stresses in the electricallyconductive or static dissipating fluorine-containing polymers and allowsthis material to be used in larger fixtures without warping. It alsoreduces the release of volatile organic compounds. Additivemanufacturing with electrically conductive or static dissipatingfluorine-containing polymers can be used at least in several electroniccircuit and electronic assembly applications, cleaning (e.g., cleaningfixtures that are ESD compliant), and electrical encapsulation.

This summary is provided to introduce a selection of concepts in asimplified form that are further described below in the detaileddescription. This summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used to limit the scope of the claimed subject matter. Other aspectsand advantages of the present invention will be apparent from thefollowing detailed description of the embodiments and the accompanyingdrawing figures.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

Embodiments of the present invention are described in detail below withreference to the attached drawing figures, wherein:

FIG. 1 is a perspective view of an additive manufacturing systemconstructed in accordance with an embodiment of the invention;

FIG. 2 is a schematic diagram of components of the additivemanufacturing system of FIG. 1;

FIG. 3 is an enlarged view of an additive manufacturing material mixtureincluding an additive manufacturing material having fluorine-containingpolymers mixed with a supplemental material, and a mix-promotingfunctional material, in accordance with an embodiment of the invention;

FIG. 4 is a perspective view of a part formed via the additivemanufacturing material mixture of FIG. 3 in accordance with anembodiment of the invention;

FIG. 5 is a flow diagram showing some steps of a method of forming apart via additive manufacturing in accordance with another embodiment ofthe invention.

The drawing figures do not limit the present invention to the specificembodiments disclosed and described herein. The drawings are notnecessarily to scale, emphasis instead being placed upon clearlyillustrating the principles of the invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The following detailed description of the invention references theaccompanying drawings that illustrate specific embodiments in which theinvention can be practiced. The embodiments are intended to describeaspects of the invention in sufficient detail to enable those skilled inthe art to practice the invention. Other embodiments can be utilized andchanges can be made without departing from the scope of the presentinvention. The following detailed description is, therefore, not to betaken in a limiting sense. The scope of the present invention is definedonly by the appended claims, along with the full scope of equivalents towhich such claims are entitled.

In this description, references to “one embodiment”, “an embodiment”, or“embodiments” mean that the feature or features being referred to areincluded in at least one embodiment of the technology. Separatereferences to “one embodiment”, “an embodiment”, or “embodiments” inthis description do not necessarily refer to the same embodiment and arealso not mutually exclusive unless so stated and/or except as will bereadily apparent to those skilled in the art from the description. Forexample, a feature, structure, act, etc. described in one embodiment mayalso be included in other embodiments, but is not necessarily included.Thus, the current technology can include a variety of combinationsand/or integrations of the embodiments described herein.

Turning to the drawing figures, and particularly FIGS. 1-4, an additivemanufacturing system 10 constructed in accordance with an embodiment ofthe present invention is illustrated. The additive manufacturing system10 may employ any additive manufacturing or “3D printing” methods suchas a sintering, laser melting, laser sintering, DIW, extrusion, fusedfilament, stereolithography, light polymerizing, powder bed, wireadditive, or laminated object manufacturing. The additive manufacturingsystem 10 may also be a hybrid system that combines additivemanufacturing with molding, scaffolding, and/or other subtractivemanufacturing or assembly techniques. The additive manufacturing system10 broadly comprises a frame 12, a build platform 14, an additivemanufacturing material reserve 16, a functional material reserve 18, amixing component 20, a feeder 22, a material deposition device 24, anoptional energy source 26, a set of motors 28, a processor 30, a curedevice 32, and an optional drying system 34.

The frame 12 provides structure for at least the build platform 14,feeder 22, material mixture deposition device 24, energy source 26, andmotors 28 and may include a base, vertical members, cross members, andmounting points for mounting the above components thereto.Alternatively, the frame 12 may be a walled housing or similarstructure.

The build platform 14 supports a part 100 as it is constructed and maybe a stationary or movable flat tray or bed, a substrate, a print plate,a shaped mandrel, a wheel, scaffolding, or similar support. The buildplatform 14 may be integral with the additive manufacturing system 10 ormay be removable and transferable with the part 100 as the part 100 isbeing constructed.

The additive manufacturing material reserve 16 retains additivemanufacturing material 102 and may be a hopper, tank, cartridge,container, spool, or other similar material holder. The additivemanufacturing material reserve 16 may be integral with the additivemanufacturing system 10 or may be disposable and/or reusable.

The additive manufacturing material 102 includes fluorine-containingpolymers 104 and a supplemental material 106. The fluorine-containingpolymers 104 may be polytetrafluoroethylene (PTFE), fluorinated ethylenepropylene (FEP), perfluoroalkoxy (PFA), ethylene tetrafluoroethylene(ETFE), or any other suitable fluorine-containing polymer.

We should consider the supplemental material be graphite, graphene,carbon, or any other suitable supplemental material and any combinationof the supplemental materials. The supplemental material 106 may begraphite, graphene, carbon, or any other suitable supplemental material.The supplemental material 106 may be added to, stirred in, or blendedwith the additive manufacturing material 102 as a doping agent or thelike. The supplemental material 106 may be between 1% and 65%, between5% and 55%, or between 15% and 50% by weight. In one embodiment, thesupplemental material 106 is graphene between 20% and 25% by weight. Inanother embodiment, the supplemental material 106 is carbon between 40%and 55% by weight. In yet another embodiment, the supplemental material106 is graphite between 35% and 45% by weight. In one embodiment, thesupplemental material 106 is a virgin material. In yet anotherembodiment, the supplemental material 106 is saturated in the additivemanufacturing material 102.

The functional material reserve 18 retains the functional material 108and may be a hopper, tank, cartridge, container, spool, or other similarmaterial holder. The functional material reserve 18 may be integral withthe additive manufacturing system 10 or may be disposable and/orreusable.

The functional material 108 may be any suitable fluorinating agent forpromoting mixing of the fluorine-containing polymers 104 and thesupplemental material 106 of the additive manufacturing material. Thefunctional material 108 may be mixed with the additive manufacturingmaterial 102 via the mixing component 20 or may be pre-mixed with theadditive manufacturing material 102.

The mixing component 20 is connected downstream of the additivemanufacturing material reserve 16 and the functional material reserve 18and upstream of the feeder 22. The mixing component 20 combines, viacontinuous inline mixing, batch mixing, or the like, the functionalmaterial 108 with the fluorine-containing polymers 104 and thesupplemental material 106 of the additive manufacturing material 102 toform a homogenous mixture. The mixing component 20 may be a mechanicalmixer, a planetary mixer, a resonance acoustic mixer, or any othersuitable mixer.

The feeder 22 is connected downstream of the mixing component 20 anddirects the additive manufacturing material 102 (now as a mixture) tothe material deposition device 24. The feeder 22 may be a pump, anauger, or any other suitable feeder. Alternatively, the additivemanufacturing material 102 may be gravity fed to the material depositiondevice 24.

The material deposition device 24 may include a nozzle, guide, sprayer,rake, or other similar component for depositing the additivemanufacturing material mixture onto the build platform 14 and previouslyconstructed layers via DIW or a similar technique. In one embodiment,the material deposition device 24 prints strands of additivemanufacturing material 102 to create a lattice structure.

The optional energy source 26 may be a laser, heater, or similarcomponent for melting the additive manufacturing material 102 andbonding (e.g., sintering) the additive manufacturing material 102 to apreviously constructed layer. The energy source 26 may be configured tomelt the additive manufacturing material 102 as the additivemanufacturing material 102 is being deposited or melt the additivemanufacturing material 102 of an entire layer after the layer ofadditive manufacturing material 102 has been deposited. The energysource 26 may be a directed energy source configured to selectively meltportions of the additive manufacturing material 102.

The motors 28 position the material deposition device 24 over the buildplatform 14 and previously constructed layers and move the materialdeposition device 24 as the additive manufacturing material 102 isdeposited onto the build platform 14 and the previously constructedlayers. The motors 28 may be oriented orthogonally to each other so thata first one of the motors 28 is configured to move the materialdeposition device 24 in a lateral “x” direction, a second one of themotors 28 is configured to move the material deposition device 24 in alongitudinal “y” direction, and a third one of the motors 28 isconfigured to move the material deposition device 24 in an altitudinal“z” direction. Alternatively, the motors 28 may move the build platform14 (and hence the part 100) while the material deposition device 24remains stationary.

The processor 30 directs the material deposition device 24 via themotors 28 and activates the material deposition device 24 such that thematerial deposition device 24 deposits the additive manufacturingmaterial 102 onto the build platform 14 and previously constructedlayers according to a computer aided design of the part. The processor30 may include a circuit board, memory, display, inputs, and/or otherelectronic components such as a transceiver or external connection forcommunicating with other external computers.

The processor 30 may implement aspects of the present invention with oneor more computer programs stored in or on computer-readable mediumresiding on or accessible by the processor. Each computer programpreferably comprises an ordered listing of executable instructions forimplementing logical functions in the processor 30. Each computerprogram can be embodied in any non-transitory computer-readable mediumfor use by or in connection with an instruction execution system,apparatus, or device, such as a computer-based system,processor-containing system, or other system that can fetch theinstructions from the instruction execution system, apparatus, ordevice, and execute the instructions. In the context of thisapplication, a “computer-readable medium” can be any non-transitorymeans that can store the program for use by or in connection with theinstruction execution system, apparatus, or device. Thecomputer-readable medium can be, for example, but not limited to, anelectronic, magnetic, optical, electro-magnetic, infrared, orsemi-conductor system, apparatus, or device. More specific, although notinclusive, examples of the computer-readable medium would include thefollowing: an electrical connection having one or more wires, a portablecomputer diskette, a random access memory (RAM), a read-only memory(ROM), an erasable, programmable, read-only memory (EPROM or Flashmemory), an optical fiber, and a portable compact disk read-only memory(CDROM).

The cure device 32 may be a heating device or system for curing the part100 after deposition is complete. The cure device 32 may be an oven, afurnace, a heating element, or any other suitable heating device. Thecure device 32 heats the part 100 so as to crosslink polymers in theadditive manufacturing material 102.

The optional drying system 34 may use heat, positive airflow, humiditycontrol, or a combination thereof to dry the part 100. Alternatively,the part 100 may be air-dried.

Turning to FIG. 5, and with reference to FIGS. 1-4, use of the additivemanufacturing system 10 will now be described in more detail. First, theadditive manufacturing material 102 may be positioned in the additivemanufacturing material reserve 16 and the functional material 108 may bepositioned in the functional material reserve 18, as shown in block 200.

The additive manufacturing material 102 (including thefluorine-containing polymers 104 and the supplemental material 106) andthe functional material 108 may then be mixed together via the mixingcomponent 20 to create a homogenous additive manufacturing materialmixture, as shown in block 202. The functional material 108 promotesmixing of the fluorine-containing polymers 104 and the supplementalmaterial 106. The mixing component 20 may selectively add the functionalmaterial 102 to the additive manufacturing material 102 according tocomputer-aided design (CAD) data, or other technical model or drawing,as followed manually or by a user or as directed in an automated orsemi-automated fashion via control signals provided from the processor30 to the motors 28. For example, the mixing component may add thefunctional material 102 to the additive manufacturing material 102according to an electronic circuit pattern.

The additive manufacturing material mixture may then be fed to thematerial deposition device 24 via the feeder 22, as shown in block 204.The additive manufacturing material mixture may be metered in discreteamounts or continuously, depending on movement and position of thematerial deposition device 24.

The material deposition device 24 may then deposit the additivemanufacturing material mixture onto the build platform 14 and previouslyconstructed layers, as shown in block 206. The specific location andplacement of the additive manufacturing material mixture may beaccording to computer-aided design (CAD) data, or other technical modelor drawing, as followed manually or by a user or as directed in anautomated or semi-automated fashion via control signals provided fromthe processor 30 to the motors 28. For example, the material depositiondevice 24 may then deposit the additive manufacturing material mixtureaccording to an electronic circuit pattern. In one embodiment, theadditive manufacturing material mixture is extruded as strands so thatthe resulting part includes a lattice structure.

In one embodiment, if the additive manufacturing material 102 isincompatible with sintering, the additive manufacturing material 102 maybe cured in the cure device 32, as shown in block 208. To that end, thecure device 32 may heat the part 100 so as to cross-link at least someof the deposited additive manufacturing material 102. This may be doneselectively so that certain portions of the deposited additivemanufacturing material 102 are cross-linked. Alternatively, the additivemanufacturing material 102 may be allowed to passively cure (e.g., atroom temperature). However, doing so may consume more time. In anotherembodiment, the additive manufacturing material 102 may be heat curedduring processing.

In another embodiment, if the additive manufacturing material 102 iscompatible with sintering, the optional energy source 26 may melt orsinter, and thereby cross-link, selected portions of the additivemanufacturing material 102 of the current layer, as shown in block 210.This may include tracing the energy source 26 over or through thecurrent layer according to CAD data, models, drawings, or othertechnical resources. The additive manufacturing material 102 may fusetogether and to additive manufacturing material of a previous layer.Temperature ranges for this step are selected to prevent deteriorationof the additive manufacturing material 102.

Note that any of steps 200-210 may be repeated multiple times as needed.For example, once one layer of the part has been deposited, anotherlayer of additive manufacturing material may be deposited on thepreviously-deposited layer. This may be accomplished through firstlowering the build platform 14 relative to the material depositiondevice 24 and energy source 26.

The optional drying system 34 may then dry (or post cure) the part, asshown in block 212. To that end, the part may be dried via heat,positive airflow, humidity control, or a combination thereof.Alternatively, the part may be air-dried.

The above-described steps may be performed in any order, includingsimultaneously. In addition, some of the steps may be repeated,duplicated, and/or omitted without departing from the scope of thepresent invention.

The above-described additive manufacturing system 10 and method provideseveral advantages. For example, the resulting part is at least one ofelectrically conductive and static dissipating, while benefiting fromthe broad possibilities of additive manufacturing and design. Thefunctional material 108 promotes mixing of the fluorine-containingpolymers 104 with the supplemental material 106 in a fluorinationprocess. When the functional material 108 is added selectively, theelectrically conductive or static dissipating characteristic can therebybe trained in regions, portions, or areas of the part for creatingelectronic circuits (such as electronic circuit 110) and otherelectrical or static-sensitive components. For other applications, theelectrically conductive or static dissipating characteristic can betruly homogenous throughout the additive manufacturing material 102 (andhence the part), whereas conventional manufacturing techniques onlyprovide approximate homogeneity.

Additively manufacturing reduces internal stresses in the electricallyconductive or static dissipating fluorine-containing polymers and allowsthis material to be used in larger fixtures without warping. It alsoreduces the release of volatile organic compounds. Additivemanufacturing with electrically conductive or static dissipatingfluorine-containing polymers can be used at least in several electroniccircuit and electronic assembly applications, cleaning (e.g., cleaningfixtures that are ESD compliant), and electrical encapsulation.

Although the invention has been described with reference to theembodiments illustrated in the attached drawing figures, it is notedthat equivalents may be employed and substitutions made herein withoutdeparting from the scope of the invention as recited in the claims.

Having thus described various embodiments of the invention, what isclaimed as new and desired to be protected by Letters Patent includesthe following:
 1. An additive manufacturing system for forming a partvia additive manufacturing, the additive manufacturing systemcomprising: a build platform configured to support the part as it isformed; an additive manufacturing material reserve that retains anadditive manufacturing material including fluorine-containing polymersbeing at least one of electrically conductive and static dissipating anda supplemental material including at least one of graphite, graphene,and carbon; a functional material reserve that retains a functionalmaterial configured to promote mixing of the fluorine-containingpolymers with the supplemental material when added to the additivemanufacturing material; a mixer downstream of the additive manufacturingmaterial reserve and the functional material reserve, the mixer beingconfigured to selectively add the functional material to the additivemanufacturing material to form an additive manufacturing materialmixture; a material depositor downstream of the mixer, the materialdepositor being configured to deposit the additive manufacturingmaterial mixture onto the build platform; and an energizer sourceconfigured to selectively cross-link portions of the deposited additivemanufacturing material mixture such that the part is at least one ofelectrically conductive and static dissipating.
 2. The additivemanufacturing system, wherein the additive manufacturing system is atleast one of a stereolithography system and a powder bed printingsystem.
 3. The additive manufacturing system of claim 1, wherein theadditive manufacturing system is at least one of an extrusion system anda fused filament fabrication system.
 4. (canceled)
 5. The additivemanufacturing system of claim 1, wherein the at least one of graphite,graphene, and carbon is saturated in the mixture.
 6. (canceled)
 7. Theadditive manufacturing system of claim 1, wherein the additivemanufacturing system is configured to add the functional material to themixture according to an electronic circuit pattern.
 8. The additivemanufacturing system of claim 1, wherein at least one of electricalconductivity and a static dissipative quality is homogenous throughoutthe additive manufacturing material.
 9. A method of forming a part viaadditive manufacturing, the method comprising the steps of: depositingadditive manufacturing material onto a build platform, the additivemanufacturing material including fluorine-containing polymers being atleast one of electrically conductive and static dissipating; selectivelycross-linking portions of the deposited additive manufacturing material;and curing the selectively cross-linked portions such that the part isat least one of electrically conductive and static dissipating.
 10. Themethod of claim 9, wherein the step of selectively cross-linkingportions of the deposited additive manufacturing material includesdirecting an energy source at the portions of the deposited additivemanufacturing material according to a computer-aided design.
 11. Themethod of claim 9, wherein the steps of depositing the additivemanufacturing material and selectively cross-linking portions of thedeposited additive manufacturing material are performed simultaneouslyvia fused filament fabrication.
 12. The method of claim 9, furthercomprising the step of mixing at least one of graphite, graphene, andcarbon with the fluorine-containing polymers to form a mixture.
 13. Themethod of claim 12, further comprising saturating the mixture with theat least one of graphite, graphene, and carbon.
 14. The method of claim12, further comprising the step of adding a functional material thatenhances mixing of the at least one of graphite, graphene, and carbonwith the fluorine-containing polymers.
 15. The method of claim 14,further comprising selectively adding the functional material to themixture according to an electronic circuit pattern.
 16. The method ofclaim 9, wherein at least one of electrical conductivity and a staticdissipative quality is homogenous throughout the cured additivemanufacturing material.
 17. A stereolithographic additive manufacturingsystem for forming a part via additive manufacturing, the additivemanufacturing system comprising: a build platform configured to supportan additive manufacturing material thereon, the additive manufacturingmaterial being a mixture including fluorine-containing polymers being atleast one of electrically conductive and static dissipating, and atleast one of graphite, graphene, and carbon; an energy source configuredto selectively cross-link portions of the additive manufacturingmaterial; and a cure device configured to cure the additivemanufacturing material such that the part is at least one ofelectrically conductive and static dissipating.
 18. Thestereolithographic additive manufacturing system of claim 17, whereinthe mixture further includes a functional material for enhancing mixing.19. The stereolithographic additive manufacturing system of claim 17,wherein the additive manufacturing system is configured to selectivelyadd the functional material to the mixture according to an electroniccircuit pattern.
 20. The stereolithographic additive manufacturingsystem of claim 17, wherein at least one of electrical conductivity anda static dissipative quality is homogenous throughout the cured additivemanufacturing material.
 21. An additive manufacturing system for forminga part via additive manufacturing, the additive manufacturing systemcomprising: a build platform configured to support the part as it isformed; an additive manufacturing material reserve that retains anadditive manufacturing material including fluorine-containing polymersbeing at least one of electrically conductive and static dissipating anda supplemental material including at least one of graphite, graphene,and carbon; a functional material reserve that retains a functionalmaterial configured to promote mixing of the fluorine-containingpolymers with the supplemental material when added to the additivemanufacturing material; a mechanical mixer downstream of the additivemanufacturing material reserve and the functional material reserve, themechanical mixer being configured to selectively add the functionalmaterial to the additive manufacturing material to form an additivemanufacturing material mixture; a material depositor downstream of themixer, the material depositor being configured to deposit the additivemanufacturing material mixture onto the build platform; a laserconfigured to selectively cross-link portions of the deposited additivemanufacturing material mixture; and a processor communicatively coupledto the mechanical mixer, the material depositor, and the laser, theprocessor being configured to: instruct the mechanical mixer toselectively add the functional material to the additive manufacturingmaterial according to computer-aided design (CAD) data of an electroniccircuit pattern; instruct the material depositor to deposit the additivemanufacturing material mixture onto the build platform and previouslyconstructed layers according to the CAD data; and instruct the laser totrace over deposited layers according to the CAD data such that portionsof the part are at least one of electrically conductive and staticdissipating.
 22. The additive manufacturing system of claim 21, thematerial depositor being configured to print strands of additivemanufacturing material mixture in a lattice structure pattern.
 23. Theadditive manufacturing system of claim 21, further comprising a dryerconfigured to dry the part.
 24. The additive manufacturing system ofclaim 21, further comprising a heater configured to heat cure theadditive manufacturing material mixture.